Grounding - Hyundai VG Series Manual

Grounding

The module use anodized corrosion-resistant aluminum alloy frames as rigid supports. To protect the module
from lightning and static electricity, and to protect personal safety. All frames and mounting brackets of the
components must be grounded. If there are no specific regulations, please follow the International Electrotechnical
Commission standard or other international standards. Connect the ground cable with the recommended connection
terminal and fix it to the module frame. It is recommended to use 12AWG copper core wire. Figure 1 shows the
grounding holes and its identification on the assembly, and Figure 2 shows the assembly grounding method.
Figure 1. Ground hole and its identification
The holes are used for grounding only and cannot be used to install module. Do not drill any additional ground
holes on any frame of the modules. Otherwise, the module warranty will be invalid.
When grounding, the grounding device must fully contact the interior of aluminum alloy, penetrate the oxide
film on the surface of the frame, and connect the frame of the module and the supporting member to achieve good
grounding effect. Use an electroplated support frame to ensure good electrical conductivity.
The ground conductor must be connected to the ground by a suitable ground electrode. You are advised to use
a ground cable accessory (wiring nose) to connect the ground cable. Weld the ground cable into the socket of the
wiring nose, insert the M4 screw into the ring of the wiring nose and the hole in the middle of the module frame, and
secure the cable using a nut. Spring washers should be used to prevent screw loosening resulting in poor grounding.
If the module is used in a high temperature and humidity environment, it is recommended to install an inverter
with an isolation transformer that can be negatively grounded (figure 3 shows the system voltage polarity
configuration).
Figure 2. Grounding method